Distributed Data Storage, DAS, and Danksharding with Valeria Nikolaenko | a16z crypto research

So-called roll-ups need to make a lot of data available for their users, which affects the transaction costs on those roll-ups. Lera Nikolaenko (a16z crypto) introduces approaches to distributed data-storage using erasure codes, and explains different approaches for achieving consensus around data-availability, including longest-chain-style and BFT-style protocols. Lera explains how Data-Availability Sampling (DAS) helps build a longest-chain-style consensus protocol, and goes into depth on one particular instantiation of DAS proposed for Ethereum by Dankrad Feist called Danksharding.

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